TapeOpCon 2006 Bass Trap

[gsmelley]

Can anyone that shed any light on the design and building materials of the bass trap that was sitting outside the Coronado rooms for most of the weekend? I missed whichever panel/workshop that was discussed in.

I had a great time at the con!

-gory
_________________
gory smelley
marfa recording co.
24 track analog recording studio - marfa, tx
-------------------------------------------------
http://www.marfarecording.com/
http://www.myspace.com/marfarecordingco

[drunton]

It was discussed during the first "Treat your 2.0 Room" Panel

Someone please correct me if I am wrong:

The frame is whatever it takes to hold it all together with some bracing. 1 x 10" or something like that.

The diagonal slats were made of "ductboard". A relatively hard to find board material used to make air ducts if you don't use that piping stuff. It is kind of flexible and can vibrates with the bass notes.

In between the ductboard you put the 703,704,705 Corning densified fiberglass.

Put an acoutstically transparent fiber over the front side, solid on the back.

Hang as many as you can in the back of your room - not stuck to the wall directly, but hanging since they will absorb more energy this way.

Sorry - that's all I have in my notes...
_________________
- Another toy that helped destroy the noble race of man
- www.corporatelockdown.com

[thewelfareline]

there are some faults in the previously stated information.

firstly these arent meant to be built so small, they are meant to encompas a large portion of the wall.

they are not meant to be spaced off the wall. this method is used with framed 703 fiberglass.

and the insulation "stuffing" between the slats was not 703, it was a less dence insulation

and on the back side of the trap it looked to have the rigid fiberglass insulation
_________________
remember when it was dangerous?

check out pics of the new welfareline studios
www.myspace.com/thewelfarelinestudio

[gsmelley]

[goldstar]

The design for the bass trap was by Eric Blackmer of Blackmer Sound. The plan he gave me to build it was a little sparse on details, so I improvised a little, and also used some material Craig had on hand to save $. You might be able to sweettalk him into a copy of them, though I'm not sure.

The face of the traps is ductboard, an air-conditioning product available from HVAC suppliers. 1" 703 would work also. The louvers on the inside were made of soundboard (Celotex), though Eric says other material like 1/2" drywall would work too, though it makes the effective freq. lower (stiffer material takes lower freqs to move them). The backs were 3/8" plywood; he spec'ed material 1/4 to 1/2" thick. The material on the inside is regular R-13 insulation.

Eric's website is www.blackmersound.com

Hope this helps.

Frank

[wayne kerr]

_________________
The Edge... there is no honest way to explain it because the only people who really know where it is are the ones who have gone over.
-Hunter S. Thompson

[Glory_Morris]

This is an interesting topic, but frankly I am VERY confused. Who's right?

[Scott R. foster]

Here is a cheap and effective bass trap If you have modest carpentry and upholstery skills, these are the the cat's pajamas. If not, our firm sells zip up bags that allow you to use your "make your bed" skills to achieve results as good or better as building your own.

http://forum.studiotips.com/viewtopic.php?t=534

Not as cheap.. but very nice: If you are building a room, it would be pretty easy to build these into the corners.

http://forum.studiotips.com/viewtopic.php?t=535
_________________
http://readyacoustics.com

[gsmelley]

wow! thanks Scott. lot's of really good info here!

[Scott R. foster]

You're Welcome.. but remember.. post pics, or it didn't happen... this is the internet after all.
_________________
http://readyacoustics.com